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| Lubricating conditions | Oil with ML MoS2 | Oil with 2D MoS2 | ||||
|---|---|---|---|---|---|---|
| Load/N | 100 | 200 | 400 | 100 | 200 | 400 |
| Initial maximum Hertz contact/GPa | 2.32 | 2.92 | 3.67 | 2.32 | 2.92 | 3.67 |
| Oil film thickness (beginning)/nm | 14.64 | 13.92 | 13.23 | 14.64 | 13.92 | 13.23 |
| Wear scar diameter of upper balls/μm | 428 | 602 | 1026 | 388 | 501 | 603 |
| Average contact pressure/MPa | 695 | 703 | 484 | 846 | 1015 | 1401 |
| Oil film thickness/nm | 34.04 | 37.75 | 54.74 | 29.68 | 29.20 | 26.04 |
